NONE · BOEING 707 338C · 2015-04-10 · Victorville, CA, USA
Event
NTSB number
ENG15IA017
Event ID
20150414X14522
Type
Incident
Date
2015-04-10
Location
Victorville, CA, USA
Coordinates
34.597499, -117.383056
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
5
Total aboard
5
Aircraft
Make
BOEING
Model
707 338C
Registration
N624RH
FAR Part
091
Engines
—
Damage
MINR
Conditions
Light
NR
Weather
VMC
Probable cause
the fracture of one 1st stage turbine blade from a high cycle fatigue crack that originated from a break in the coating on the leading edge of the blade. The cause for the break in the coating could not be determined. Contributing to the uncontained release of turbine material was the yielding and rupture of the turbine exhaust case wall after turbine debris collected at probes in the case.